CN102710391A - Feedback method, base station and user equipment for hybrid automatic repeat request feedback information - Google Patents
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Abstract
An embodiment of the invention provides a feedback method, a base station and user equipment for hybrid automatic repeat request feedback information. The method includes generating a feedback pattern for indicating the HARQ (hybrid automatic repeat request) feedback information of uplink data; and transmitting the feedback pattern to the user equipment. The feedback pattern is a coding sequence consisting of +1 and/or -1, and the length of the feedback pattern is six information bits when the base station detects that the user equipment transmits the uplink double-flow data. The adopted feedback pattern is jointly encoded by the six information bits when the base station detects that the user equipment transmits the uplink double-flow data, accordingly, the HARQ feedback information of the double-flow uplink data can be indicated, and HARQ feedback in UL-MIMO (uplink-multiple-input multiple-output) is realized.
Description
Technical Field
The embodiment of the invention relates to the field of wireless communication, in particular to a feedback method of HARQ (hybrid automatic Repeat Request), a base station and user equipment.
Background
In a wireless communication system, an E-HICH (E-DCH HARQ indicator Channel) is set in a downlink for data transmission with an Enhanced Dedicated Channel (E-DCH).
The E-HICH is a dedicated downlink physical channel with fixed rate, and carries HARQ acknowledgement indication of uplink E-DCH, i.e. carries HARQ acknowledgement indication command through the E-HICH channel, and the command content includes ACK and NACK. Wherein, ACK represents acknowledgement (acknowledgement), and if the transmitting end receives ACK from the receiving end, it represents that the transmitting end can transmit new data; NACK means Non-acknowledgement (Non-acknowledgement), and if the transmitting end receives NACK from the receiving end, it means that the transmitting end can retransmit the last data. Meanwhile, NACK is divided into NACK in both cases of a link set not including the serving E-DCH cell and a link set including the serving E-DCH cell, and in the former case, a NACK command may be generally expressed as a DTX (Discontinuous Transmission) command, and in the latter case, a NACK command is expressed as NACK. Whether DTX or NACK is performed, the data transmitting end needs to perform data retransmission.
The frame format of the E-HICH channel transmission is shown in fig. 1, wherein the frame of the E-HICH channel transmission may be a 2ms subframe or a 10ms subframe. The 2ms subframe includes 3 slots, and the 10ms subframe includes 12 consecutive slots, respectively corresponding to the E-DCH having a TTI (Transmission Time Interval) of 2ms and 10 ms. Each time slot comprising 40 bits, the sequence of time slots i being denoted by bi,0,bi,1,…,bi,39,bi,j=a Css,40,m(i),jAnd (4) showing. In the radio link set containing the service E-DCH link set, the HARQ indication a is set to be +1 or-1, and in the radio link not containing the service E-DCH link setCollectively, the HARQ indication a is set to +1 or 0. Orthogonal signature sequence Css,40,m(i)The indication is given by the higher layer by the E-HICH signature (signature) sequence.
Taking 2ms TTI as an example, UE (User Equipment) sends a Transport Block (TB) in uplink, and after receiving the TB, the base station sends feedback values of 3 consecutive slots on E-HICH according to whether the reception is correct. The current scheme is a feedback mechanism for transmitting one TB for one TTI. When introducing UL-MIMO (Uplink-Multiple-Input-Multiple-Output), 2 TBs can be transmitted simultaneously in one TTI (transmission time interval), namely, double-stream transmission is adopted; it is also possible to send 1 TB in one TTI, i.e. with single stream transmission. In this case, a new feedback mechanism is needed to feed back the transmission error condition of the uplink data.
Disclosure of Invention
The embodiment of the invention provides a feedback method of HARQ feedback information in a UL-MIMO technology, a base station and user equipment, which can solve the HARQ feedback problem of uplink data in a UL-MIMO scene.
In one aspect, a method for feeding back HARQ feedback information in UL-MIMO is provided, including: generating a feedback pattern for indicating HARQ feedback information of uplink data, wherein the feedback pattern is a coding sequence consisting of +1 and/or-1, and the length of the feedback pattern is 6 information bits under the condition that a base station detects that the user equipment sends uplink double streams; the feedback pattern is transmitted to the user equipment.
In another aspect, a method for feeding back HARQ feedback information in UL-MIMO is provided, including: receiving a feedback pattern sent by a base station, wherein the feedback pattern is a coded sequence consisting of +1 and/or-1, and the length of the feedback pattern is 6 information bits under the condition that the base station detects that the user equipment sends uplink double streams; HARQ feedback information indicated by the feedback pattern is determined.
In another aspect, a base station is provided, including: a generating unit, configured to generate a feedback pattern used for indicating HARQ feedback information of uplink data, where the feedback pattern is a coded sequence consisting of +1 and/or-1, and the length of the feedback pattern is 6 information bits when the base station detects that an uplink dual stream is sent for the user equipment; and a transmitting unit for transmitting the feedback pattern generated by the generating unit to the user equipment.
In another aspect, a user equipment is provided, including: the receiving unit is used for receiving a feedback pattern sent by the base station, wherein the feedback pattern is a coded sequence consisting of +1 and/or-1, and the length of the feedback pattern is 6 information bits under the condition that the base station detects that the user equipment sends uplink double streams; a determining unit, configured to determine HARQ feedback information indicated by the feedback pattern received by the receiving unit.
In the embodiment of the invention, under the condition that the base station detects that the user equipment sends the uplink double-stream, the feedback pattern of the 6-information bit combined coding is adopted, so that the HARQ feedback information of the double-stream uplink data can be indicated, and the problem of HARQ feedback in UL-MIMO is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a feedback method of HARQ indication according to an embodiment of the present invention.
Fig. 2 is a flowchart of a feedback method of HARQ indication according to another embodiment of the present invention.
Fig. 3 is a schematic block diagram of a base station of an embodiment of the present invention.
Fig. 4 is a schematic block diagram of a user equipment of one embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention can be applied to various communication systems, such as: global System for Mobile communications (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), and the like.
User Equipment (UE), also referred to as mobile terminal (mobile terminal), mobile User Equipment, etc., may communicate with one or more core networks via a Radio access network (e.g., RAN), and may be mobile terminals, such as mobile phones (or "cellular" phones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, that exchange language and/or data with the Radio access network.
The Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, or an evolved Node B (eNB or e-NodeB) in LTE, but the present invention is not limited thereto, and for convenience of description, the Node B is taken as an example in the following embodiments.
Fig. 1 is a flowchart of a feedback method of HARQ indication according to an embodiment of the present invention. The method of fig. 1 is performed by a base station.
101, a feedback pattern for indicating HARQ feedback information (HARQ-ACK message) of uplink data is generated. The feedback pattern is a coded sequence consisting of +1 and/or-1, and the length of the feedback pattern is 6 information bits under the condition that the base station detects that the user equipment sends uplink double streams.
In the existing E-HICH code channel structure, a set of signature sequences is used on the same code channel. Each group of signature sequences corresponds to three signatures and can carry feedback information of 3 information bits. Optionally, as an embodiment, in the feedback pattern of 6 information bits in the case of dual stream, the first 3 information bits and the last 3 information bits may respectively correspond to two sets of signature sequences. In other words, two sets of signature sequences can be used on the same code track, which can carry feedback information of 6 information bits. These 6 information bits may be used to jointly encode feedback information in the dual stream case.
And 102, sending a feedback pattern to the user equipment.
For example, the base station may transmit the feedback pattern generated in step 101 to the user equipment on an E-HICH or similar channel.
Thus, in the embodiment of the invention, under the condition that the base station detects that the user equipment sends the uplink double-stream, the feedback pattern of the 6-information bit joint coding is adopted, thereby indicating the HARQ feedback information of the double-stream uplink data and solving the HARQ feedback problem in UL-MIMO.
Optionally, as an embodiment, in a case that the base station detects that the user equipment transmits the uplink dual stream, the minimum code distance value between the generated different feedback patterns may be maximized. For example, assuming that there are 4 feedback patterns of 6 information bits, it can be obtained that the minimum code distance value between the 4 feedback patterns is maximum when 4. This can improve the encoding reliability of the feedback pattern.
Optionally, as an embodimentIf the base station detects that two sets of signature sequences are used when the user equipment transmits the uplink dual stream, the base station may notify the user equipment of the two sets of signature sequences, for example, by means of a high layer indication. The base station can directly inform the user equipment of the signature sequence indexes l of the two groups of signature sequences1And l2. Alternatively, the base station may inform the user equipment of the signature sequence index/of one of the two sets of signature sequences1So that the user equipment indexes l according to the signature sequence1Obtain a signature sequence index l for another set of signature sequences2。
Signature sequence index l1And a signature sequence index l2The mapping relationship between the base station and the user equipment can be preset or determined by negotiation, or one of the base station and the user equipment notifies the other. For example, the mapping may be l2=(l1+ K) mod40, where K is an integer. Or the mapping may be l2=40-l1. In general, K can be taken to be any integer between 1 and 39. The base station and the user equipment can realize negotiation or notification of the mapping relation of the signature sequence index by interacting the value of the parameter K. If the base station detects that the user equipment sends the uplink single stream, the base station only needs to send one signature sequence index.
Embodiments of the present invention are described in more detail below with reference to specific examples. It should be noted that the following examples are only for helping those skilled in the art to better understand the concept of the present invention, and do not limit the scope of the embodiments of the present invention.
Example one
In the first embodiment, in the case that the uplink data adopts a single stream, the length of the feedback pattern is 3 information bits. Thus, the original HARQ indication sequence can be compatible.
Specifically, in step 101 of fig. 1, a feedback pattern corresponding to HARQ feedback information may be generated, where the HARQ feedback information of uplink data adopting a dual stream is (ACK ), (ACK, NACK), (NACK, ACK), or (NACK ), and the HARQ feedback information of uplink data adopting a single stream is ACK or NACK. Wherein ACK means acknowledgement, NACK means negative acknowledgement, symbol "," previous ACK or NACK means HARQ feedback information of uplink data of the primary stream in the dual stream, and symbol "subsequent ACK or NACK means HARQ feedback information of uplink data of the secondary stream in the dual stream.
In addition, DTX does not occupy feedback resources. The HARQ feedback information of the base station under the single and dual stream condition is shown in table 1:
table 1 HARQ feedback information corresponding to a base station when transmitting single stream or double streams in uplink:
in table 1, the symbol "/" indicates "or" symbol "," previous ACK or NACK indicates HARQ feedback information of uplink data of a primary stream in a dual stream, and "subsequent ACK or NACK indicates HARQ feedback information of uplink data of a secondary stream in the dual stream. The DTX detection and feedback is the same as in the prior art and will not be described in detail.
Optionally, as an embodiment, the first 3 information bits of the feedback pattern corresponding to the HARQ feedback information (ACK, NACK) and the 3 information bits of the feedback pattern corresponding to the HARQ feedback information ACK are the same. Alternatively, the first 3 information bits of the feedback pattern corresponding to HARQ feedback information (NACK ) and the 3 information bits of the feedback pattern corresponding to HARQ feedback information NACK are the same. In this way, when uplink data is a single stream, even if the base station side detects that there is a double stream (false alarm) and feeds back (ACK, NACK) or (NACK ) corresponding to the double stream, the UE can correctly determine whether the base station receives uplink data correctly because the UE considers HARQ feedback information of only one of the streams (i.e., the main stream).
Alternatively, when generating the feedback patterns corresponding to the HARQ feedback information, the minimum code distance value between the feedback patterns may be made as large as possible to improve the encoding reliability of the feedback patterns.
Table 2 is an example of a mapping table of feedback patterns and HARQ feedback information, where the minimum code distance value between feedback patterns of dual streams is maximum, equal to 4. It should be noted that the form of the feedback patterns of the embodiment of the present invention is not limited to the example of table 2, for example, the mapping relationships in the tables may be exchanged or the values of the information bits may be changed to obtain other equivalent mapping tables, or the minimum code distance value between the feedback patterns may be reduced appropriately (e.g., equal to 3 or other values). Such modifications fall within the scope of the present invention.
Table 2 example of mapping table of HARQ feedback information and feedback pattern
HARQ feedback information | Feedback pattern |
ACK | {+1,+1,+1} |
NACK | {-1,-1,-1} |
(ACK,ACK) | {+1,+1,-1;-1,+1,+1} |
(ACK,NACK) | {+1,+1,+1;+1,-1,-1} |
(NACK,ACK) | {-1,-1,+1;+1,+1,+1} |
(NACK,NACK) | {-1,-1,-1;-1,-1,-1} |
In table 2 "; "the first three information bits and"; the three information bits after "correspond to different signature sequences, respectively. For an E-HICH code channel corresponding to a certain signature sequence, 40 bits in each time slot correspond to a HARQ indication a. Sequence of time slots i with bi,0,bi,1,…,bi,40Is shown in the specification, wherein bi,j=a Css,40,m(i),j. In a radio link set including a serving E-DCH link set, HARQ indication a is set to +1 or-1, and orthogonal signature sequence Css,40,m(i)The indication is given by the higher layer by the E-HICH signature sequence. For the TB block error feedback channel of E-DCH with 10ms TTI, the E-HICH channel contains 12 consecutive slots, which can be processed by repeating 3 consecutive slots under 2ms TTI.
Table 1 is compatible with existing HARQ indication sequences. The feedback pattern of table 2 has good code distance performance and high reliability. Moreover, the feedback pattern in table 2 can not only be compatible with the existing single-stream HARQ indication sequence, but also ensure that false alarm detection of the base station does not result in misjudgment of the UE, thereby improving the accuracy of HARQ feedback.
Example two
In the second embodiment, when the base station detects that the user equipment transmits the uplink single stream, the length of the feedback pattern is also 6 information bits, but the same feedback pattern is used for indicating different HARQ feedback information when the user equipment transmits the single stream and the dual stream, respectively, so that the number of feedback patterns can be reduced, and the feedback reliability can be improved.
Specifically, in step 101 of fig. 1, a feedback pattern is generated, where the feedback pattern indicating HARQ feedback information (ACK, NACK) in case of an uplink dual stream indicates HARQ feedback information ACK in case of an uplink single stream, the feedback pattern indicating HARQ feedback information (NACK ) in case of an uplink dual stream indicates HARQ feedback information NACK in case of an uplink single stream, and the feedback pattern indicating HARQ feedback information (ACK ) and (NACK, ACK) in case of an uplink dual stream is not used in case of an uplink single stream, where ACK denotes acknowledgement, NACK denotes negative acknowledgement, symbol, and "previous ACK or NACK denotes HARQ feedback information of uplink data of a main stream in a dual stream, and symbol", "subsequent ACK or NACK denotes HARQ feedback information of uplink data of a secondary stream in a dual stream. Thus, the feedback patterns can be compressed into 4 types, corresponding to (ACK ), (ACK, NACK), (NACK, ACK), or (NACK ), respectively, and then only 6 information bits are needed to encode the 4 feedback patterns.
Table 3 is HARQ feedback information of the base station in case of single and dual stream, where DTX does not occupy the feedback resource.
Table 3 corresponding feedback of the base station when transmitting single stream or double streams in uplink:
in table 3, the symbol "/" indicates "or" symbol "," previous ACK or NACK indicates HARQ feedback information of uplink data of the primary stream in the dual stream, and "subsequent ACK or NACK indicates HARQ feedback information of uplink data of the secondary stream in the dual stream. In addition, the DTX detection and feedback are the same as in the prior art, and therefore are not described in detail.
As shown in table 3, the feedback pattern corresponding to (ACK, NACK) indicates that the HARQ feedback information of the uplink data is an acknowledgement if the base station detects that the user equipment transmits the uplink single stream, indicates that the HARQ feedback information of the uplink data of the primary stream is an acknowledgement and indicates that the HARQ feedback information of the uplink data of the secondary stream is a negative acknowledgement if the base station detects that the user equipment transmits the uplink dual stream.
The feedback pattern corresponding to (NACK ) indicates that the HARQ feedback information of the uplink data is a negative acknowledgement if the base station detects that the user equipment transmits the uplink single stream, indicates that the HARQ feedback information of the uplink data of the primary stream is a negative acknowledgement and the HARQ feedback information of the uplink data of the secondary stream is a negative acknowledgement if the base station detects that the user equipment transmits the uplink double stream.
The feedback pattern corresponding to (ACK ) is not used when the base station detects that the user equipment transmits the uplink single stream, and indicates that HARQ feedback information of the primary stream is acknowledgement and HARQ feedback information of the secondary stream is acknowledgement when the base station detects that the user equipment transmits the uplink dual stream.
The feedback pattern corresponding to (NACK, ACK) is not used in case the base station detects that the user equipment transmits the uplink single stream, and indicates that HARQ feedback information of the uplink data of the primary stream is a negative acknowledgement and HARQ feedback information of the uplink data of the secondary stream is an acknowledgement in case the base station detects that the user equipment transmits the uplink dual stream.
Optionally, when generating the feedback patterns, the minimum code distance value between the feedback patterns may be made as large as possible to improve the encoding reliability of the feedback patterns.
Tables 4 and 5 are two examples of mapping tables of feedback patterns and HARQ feedback, where the minimum code distance value between the feedback patterns is maximum, equal to 4. It should be noted that the form of the feedback patterns of the embodiment of the present invention is not limited to the examples of table 4 and table 5, for example, the mapping relationships in the tables may be exchanged or the values of the information bits may be changed to obtain other equivalent mapping tables, or the minimum code distance value between the feedback patterns may be reduced appropriately (e.g., equal to 3 or other values). Such modifications fall within the scope of the present invention.
Table 4 an example of a mapping table of HARQ feedback and feedback patterns
HARQ feedback | Feedback pattern |
(ACK,ACK) | {+1,-1,+1;-1,-1,-1} |
(ACK,NACK) | {-1,+1,-1;-1,+1,-1} |
(NACK,ACK) | {+1,+1,-1;+1,-1,+1} |
(NACK,NACK) | {-1,-1,+1;+1,+1,+1} |
Table 5 another example of a mapping table for HARQ feedback and feedback patterns
HARQ feedback | Feedback pattern |
(ACK,ACK) | {-1,-1,-1;-1,-1,-1} |
(ACK,NACK) | {+1,+1,+1;+1,-1,-1} |
(NACK,ACK) | {+1,+1,-1;-1,+1,+1} |
(NACK,NACK) | {-1,-1,+1;+1,+1,+1} |
In tables 4 and 5 "; "the first three information bits and"; the three information bits after "correspond to different signature sequences, respectively. For an E-HICH code channel corresponding to a certain signature sequence, 40 bits of each time slot correspond to a HARQ indication a, and the sequence of the time slot i is represented by bi,0,bi,1,…,bi,40Is shown in the specification, wherein bi,j=aCss,40,m(i),j. In a radio link set including a serving E-DCH link set, HARQ indication a is set to +1 or-1, and orthogonal signature sequence Css,40,m(i)The indication is given by the higher layer by the E-HICH signature sequence. For the TB block error feedback channel of E-DCH with 10ms TTI, the E-HICH channel contains 12 consecutive slots, which can be processed by repeating 3 consecutive slots under 2ms TTI.
The above embodiment can compress the number of feedback patterns, and the minimum code distance between the feedback patterns can be improved and the feedback reliability can be enhanced by jointly encoding the 6 information bits corresponding to the two signature sequences.
Fig. 2 is a flowchart of a feedback method of HARQ feedback information in UL-MIMO technology according to an embodiment of the present invention. The method of fig. 2 is performed by the UE and corresponds to the method of fig. 1, and thus duplicate description will be appropriately omitted.
A feedback pattern transmitted by a base station is received 201. The feedback pattern is a coded sequence consisting of +1 and/or-1, and the length of the feedback pattern is 6 information bits under the condition that the base station detects that the user equipment sends uplink double streams.
For example, the UE may receive a feedback pattern sent by the base station on the E-HICH or similar channel.
The HARQ feedback information indicated by the feedback pattern is determined 202.
In the embodiment of the invention, under the condition that the base station detects that the user equipment sends the uplink double-stream, the feedback pattern of the 6-information bit combined coding is adopted, so that the HARQ feedback information of the double-stream uplink data can be indicated, and the problem of HARQ feedback in UL-MIMO is solved.
In the existing E-HICH code channel structure, a set of signature sequences is used on the same code channel. Each group of signature sequences corresponds to three signatures and can carry feedback information of 3 information bits. The first 3 information bits and the last 3 information bits in the pattern correspond to two sets of signature sequences respectively. In other words, two sets of signature sequences can be used on the same code track, which can carry feedback information of 6 information bits. These 6 information bits may be used to jointly encode feedback information in the dual stream case.
Optionally, as an embodiment, when the base station detects that the user equipment sends the uplink dual stream, the minimum code distance value between different feedback patterns is the largest. For example, assuming that there are 4 feedback patterns of 6 information bits, it can be obtained that the minimum code distance value between the 4 feedback patterns is maximum when 4. This can improve the encoding reliability of the feedback pattern.
Optionally, as an embodiment, if the base station detects that the ue sends the uplink dual stream, two sets of signature sequences are usedThe ue may then receive the two sets of signature sequences as signaled by the base station, e.g., by way of a higher layer indication. The user equipment can directly receive the signature sequence index l of the two groups of signature sequences informed by the base station1And l2. Alternatively, the user equipment may receive the signature sequence index l of one of the two sets of signature sequences notified by the base station1And index l according to the signature sequence1Obtain a signature sequence index l for another set of signature sequences2。
Signature sequence index l1And a signature sequence index l2The mapping relationship between the base station and the user equipment can be preset or determined by negotiation, or one of the base station and the user equipment notifies the other. For example, the mapping may be l2=(l1+ K) mod40, where K is an integer, or l2=40-l1,. In general, K can be taken to be any integer between 1 and 39. The base station and the user equipment can realize negotiation or notification of the mapping relation of the signature sequence index by interacting the value of the parameter K. If the base station detects that the user equipment sends the uplink single stream, the base station only needs to send one signature sequence index.
Optionally, as another embodiment, in a case that the base station detects that the user equipment transmits an uplink single stream, the length of the feedback pattern may be 3 information bits, as described in the first embodiment. In this case, at step 202 of fig. 2, HARQ feedback information corresponding to the feedback pattern may be determined. The HARQ feedback information may be as shown in table 1, where the HARQ feedback information of the uplink data using the dual stream is (ACK ), (ACK, NACK), (NACK, ACK), or (NACK ), the HARQ feedback information of the uplink data using the single stream is ACK or NACK, where ACK indicates that the HARQ feedback information is acknowledgement, NACK indicates that the HARQ feedback information is negative acknowledgement, symbol, "" previous ACK or NACK indicates HARQ feedback information of the uplink data of the main stream in the dual stream, and symbol, "" subsequent ACK or NACK indicates HARQ feedback information of the uplink data of the secondary stream in the dual stream. The DTX detection and feedback is the same as in the prior art.
Alternatively, as another embodiment, as shown in table 3 above, it may be determined that HARQ feedback information corresponding to the feedback pattern { +1, +1, +1} is ACK, HARQ feedback information corresponding to the feedback pattern { -1, -1, -1} is NACK, HARQ feedback information corresponding to the feedback pattern { +1, +1, -1; -1, +1, +1} is (ACK ), HARQ feedback information corresponding to the feedback pattern { +1, +1, +1; +1, -1, -1} is (ACK, NACK), HARQ feedback information corresponding to the feedback pattern { -1, -1, +1; +1, +1} is (NACK, ACK), HARQ feedback information corresponding to the feedback pattern { -1, -1, -1; -1, -1, -1, -1}, NACK, NACK).
The feedback pattern of table 2 has good code distance performance and high reliability. Moreover, the feedback pattern in table 2 can not only be compatible with the existing single-stream HARQ indication sequence, but also ensure that false alarm detection of the base station does not result in misjudgment of the UE, thereby improving the accuracy of HARQ feedback.
Optionally, as another embodiment, in a case that the base station detects that the user equipment transmits an uplink single stream, the length of the feedback pattern may be 6 information bits, as shown in the second embodiment above. The same feedback pattern is used to indicate different HARQ feedback information in case that uplink data employs a single stream and a dual stream, respectively.
In this case, in step 202 of fig. 2, it may be determined whether (ACK ), (ACK, NACK), (NACK, ACK) or (NACK ) feedback is required, and a corresponding feedback pattern is determined. Wherein, the feedback pattern indicating HARQ feedback information (ACK, NACK) in case of an uplink dual stream indicates HARQ feedback information ACK in case of an uplink single stream, the feedback pattern indicating HARQ feedback information (NACK ) in case of an uplink dual stream indicates HARQ feedback information NACK in case of an uplink single stream, the feedback pattern indicating HARQ feedback information (ACK ) and (NACK, ACK) in case of an uplink dual stream is not used in case of an uplink single stream, wherein ACK denotes acknowledgement, NACK denotes negative acknowledgement, symbol "," previous ACK or NACK denotes HARQ feedback information of uplink data of a main stream in a dual stream, and symbol "," next ACK or NACK denotes HARQ feedback information of uplink data of a secondary stream in a dual stream.
For example, as shown in table 3 above, it may be determined that the feedback pattern corresponding to (ACK, NACK) indicates that HARQ feedback information of uplink data is an acknowledgement if the base station detects that the user equipment transmits an uplink single stream, indicates that HARQ feedback information of uplink data of a primary stream is an acknowledgement and indicates that HARQ feedback information of uplink data of a secondary stream is a negative acknowledgement if the base station detects that the user equipment transmits an uplink dual stream. Alternatively, it may be determined that the feedback pattern corresponding to (NACK ) indicates that the HARQ feedback information of the uplink data is a negative acknowledgement if the base station detects that the user equipment transmits the uplink single stream, indicates that the HARQ feedback information of the uplink data of the primary stream is a negative acknowledgement and indicates that the HARQ feedback information of the uplink data of the secondary stream is a negative acknowledgement if the base station detects that the user equipment transmits the uplink dual stream.
Alternatively, it may be determined that the feedback pattern corresponding to (ACK ) indicates that HARQ feedback information of uplink data of the primary stream is acknowledgment and HARQ feedback information of uplink data of the secondary stream is acknowledgment. Alternatively, it may be determined that the feedback pattern corresponding to (NACK, ACK) indicates that HARQ feedback information of uplink data of the primary stream is negative acknowledgement and HARQ feedback information of uplink data of the secondary stream is acknowledgement.
The DTX detection and feedback is the same as in the prior art and will not be described in detail.
Optionally, as another embodiment, as shown in table 4 or table 5 above, the HARQ feedback information indicated by the feedback pattern may be determined in combination with the single-stream and dual-stream information of the uplink data.
The above embodiment can compress HARQ feedback information, and adopts joint coding of 6 information bits corresponding to two signature sequences, so as to improve the minimum code distance between feedback patterns and enhance feedback reliability.
Fig. 3 is a schematic block diagram of a base station of an embodiment of the present invention. The base station 30 of fig. 3 includes a generating unit 31 and a transmitting unit 32. The generating unit 31 may be implemented by a processor and the transmitting unit 32 may be implemented by an interface or a transceiver.
The generating unit 31 generates a feedback pattern indicating hybrid automatic repeat request HARQ feedback information for uplink data. The feedback pattern is a coded sequence consisting of +1 and/or-1. And when the base station detects that the user equipment sends the uplink double stream, the length of the feedback pattern is 6 information bits.
The transmitting unit 32 transmits the feedback pattern generated by the generating unit 31 to the user equipment.
In the embodiment of the invention, under the condition that the base station detects that the user equipment sends the uplink double-stream, the feedback pattern of the 6-information bit combined coding is adopted, so that the HARQ feedback information of the double-stream uplink data can be indicated, and the problem of HARQ feedback in UL-MIMO is solved.
The base station 30 of fig. 3 can implement the method of fig. 1 and the above-mentioned first and second embodiments, and will not be described in detail to avoid repetition.
Alternatively, as an embodiment, the first 3 information bits and the last 3 information bits in the feedback pattern of 6 information bits generated by the generation unit 31 correspond to two sets of signature sequences, respectively. In other words, two sets of signature sequences can be used on the same code track, which can carry feedback information of 6 information bits. These 6 information bits may be used to jointly encode feedback information in the dual stream case.
Optionally, as an embodiment, if the base station detects that two sets of signature sequences are used when the base station transmits the uplink dual stream for the ue, the base station may notify the ue of the two sets of signature sequences, for example, by means of a high layer indication. The base station can directly inform the user equipment of the signature sequence indexes l of the two groups of signature sequences1And l2. Alternatively, the base station may inform the user equipment of the signature sequence index/of one of the two sets of signature sequences1So that the user equipment indexes l according to the signature sequence1Obtain a signature sequence index l for another set of signature sequences2。
Signature sequence index l1And a signature sequence index l2Can be connected withA certain mapping relationship is satisfied, and the mapping relationship may be preset or determined by negotiation between the base station and the user equipment, or one of the base station and the user equipment notifies the other. For example, the mapping may be l2=(l1+ K) mod40, where K is an integer, or l2=40-l1. In general, K can be taken to be any integer between 1 and 39. The base station and the user equipment can realize negotiation or notification of the mapping relation of the signature sequence index by interacting the value of the parameter K. If the base station detects that the user equipment sends the uplink single stream, the base station only needs to send one signature sequence index.
Optionally, as another embodiment, the length of the feedback pattern generated by the generating unit when the base station detects that the user equipment transmits an uplink single stream is 3 information bits, as described in the first embodiment. In this case, the generating unit 31 may generate a feedback pattern corresponding to HARQ feedback information, where HARQ feedback information of uplink data using a dual stream is (ACK ), (ACK, NACK), (NACK, ACK), or (NACK ), and HARQ feedback information of uplink data using a single stream is ACK or NACK, as shown in table 1 above, where ACK denotes that the HARQ feedback information is acknowledgment, NACK denotes that the HARQ feedback information is negative acknowledgment, symbol "," previous ACK or NACK denotes HARQ feedback information of uplink data of a primary stream in the dual stream, and "next ACK or NACK denotes HARQ feedback information of uplink data of a secondary stream in the dual stream.
Alternatively, as another embodiment, the first 3 information bits of the feedback pattern corresponding to the HARQ feedback information (ACK, NACK) generated by the generating unit 31 and the 3 information bits of the feedback pattern corresponding to the HARQ feedback information ACK are the same, or the first 3 information bits of the feedback pattern corresponding to the HARQ feedback information (NACK ) generated by the generating unit and the 3 information bits of the feedback pattern corresponding to the HARQ feedback information NACK are the same. In this way, when uplink data is a single stream, even if the base station side detects that there is a double stream (false alarm) and feeds back (ACK, NACK) or (NACK ) corresponding to the double stream, the UE can correctly determine whether the base station receives uplink data correctly because the UE considers HARQ feedback information of only one of the streams (i.e., the main stream).
Alternatively, when generating the feedback patterns corresponding to the HARQ feedback information, the generating unit 31 may make the minimum code distance value between the feedback patterns as large as possible to improve the coding reliability of the feedback patterns, for example, adopt the feedback patterns of table 2 above.
For example, as shown in table 2, the feedback pattern corresponding to HARQ feedback information ACK generated by the generation unit 31 is { +1, +1, +1}, the feedback pattern corresponding to HARQ feedback information NACK is { -1, -1, -1}, the feedback pattern corresponding to HARQ feedback information (ACK ) is { +1, +1, -1; -1, +1, +1}, the feedback pattern corresponding to HARQ feedback information (ACK, NACK) is { +1, +1, +1; +1, -1, -1}, the feedback pattern corresponding to HARQ feedback information (NACK, ACK) is { -1, -1, +1, +1, +1}, and the feedback pattern corresponding to HARQ feedback information (NACK ) is { -1, -1, -1; -1, -1, -1 }.
Table 1 is compatible with existing HARQ indication sequences. The feedback pattern of table 2 has good code distance performance and high reliability. Moreover, the feedback pattern in table 2 can not only be compatible with the existing single-stream HARQ indication sequence, but also ensure that false alarm detection of the base station does not result in misjudgment of the UE, thereby improving the accuracy of HARQ feedback.
Optionally, as another embodiment, the length of the feedback pattern generated by the generating unit 31 is 6 information bits when the base station detects that the user equipment transmits an uplink single stream, and the same feedback pattern is used to indicate different HARQ feedback information when the uplink data adopts a single stream and a dual stream, respectively, as described in the second embodiment above.
Alternatively, as one embodiment, as shown in table 3 above, the generating unit 31 may generate a feedback pattern corresponding to (ACK ), (ACK, NACK), (NACK, ACK), or (NACK ), where ACK represents acknowledgement and NACK represents negative acknowledgement. Specifically, the feedback pattern corresponding to (ACK, NACK) indicates that the HARQ feedback information of the uplink data is an acknowledgement if the base station detects that the user equipment transmits the uplink single stream, indicates that the HARQ feedback information of the uplink data of the primary stream is an acknowledgement and indicates that the HARQ feedback information of the uplink data of the secondary stream is a negative acknowledgement if the base station detects that the user equipment transmits the uplink dual stream. The feedback pattern corresponding to (NACK ) indicates that the HARQ feedback information of the uplink data is a negative acknowledgement if the base station detects that the user equipment transmits the uplink single stream, indicates that the HARQ feedback information of the uplink data of the primary stream is a negative acknowledgement and the HARQ feedback information of the uplink data of the secondary stream is a negative acknowledgement if the base station detects that the user equipment transmits the uplink double stream. The feedback pattern corresponding to (ACK ) is not used when the base station detects that the user equipment transmits the uplink single stream, and indicates that HARQ feedback information of the primary stream is acknowledgement and HARQ feedback information of the secondary stream is acknowledgement when the base station detects that the user equipment transmits the uplink dual stream. The feedback pattern corresponding to (NACK, ACK) is not used in case the base station detects that the user equipment transmits the uplink single stream, and indicates that HARQ feedback information of the uplink data of the primary stream is a negative acknowledgement and HARQ feedback information of the uplink data of the secondary stream is an acknowledgement in case the base station detects that the user equipment transmits the uplink dual stream.
Alternatively, the generating unit 31 may maximize the minimum code distance value between the feedback patterns when generating the feedback patterns to improve the encoding reliability of the feedback patterns, for example, the feedback patterns in tables 4 and 5 above.
In addition, the embodiments in tables 3-5 can compress the number of feedback patterns, and jointly encode the 6 information bits corresponding to the two signature sequences, thereby improving the minimum code distance between the feedback patterns and enhancing the feedback reliability.
Fig. 4 is a schematic block diagram of a user equipment 40 of one embodiment of the present invention. The user equipment 40 of fig. 4 comprises a receiving unit 41 and a determining unit 42. The receiving unit 41 may be implemented by an interface or a transceiver and the determining unit 42 may be implemented by a processor.
The receiving unit 41 receives the feedback pattern transmitted by the base station. The feedback pattern is a coded sequence consisting of +1 and/or-1, and the length of the feedback pattern is 6 information bits under the condition that the base station detects that the user equipment sends uplink double streams. The determination unit 42 determines HARQ feedback information indicated by the feedback pattern received by the reception unit 41.
In the embodiment of the invention, under the condition that the base station detects that the user equipment sends the uplink double-stream, the feedback pattern of the 6-information bit combined coding is adopted, so that the HARQ feedback information of the double-stream uplink data can be indicated, and the HARQ feedback problem in UL-MIMO is solved.
The user 40 of fig. 4 may implement the method of fig. 2 and the above-described first and second embodiments, and will not be described in detail to avoid repetition.
Optionally, as an embodiment, the first 3 information bits and the last 3 information bits in the feedback pattern of 6 information bits received by the receiving unit 41 respectively correspond to two sets of signature sequences. In other words, two sets of signature sequences can be used on the same code track, which can carry feedback information of 6 information bits. These 6 information bits may be used to jointly encode feedback information in the dual stream case.
Optionally, as an embodiment, if the base station detects that two sets of signature sequences are used when the user equipment transmits the uplink dual stream, the receiving unit 41 may further receive the two sets of signature sequences notified by the base station, for example, by means of a higher layer indication. The receiving unit 41 may receive the signature sequence index l of the two sets of signature sequences notified by the base station1And l2. Alternatively, the receiving unit 41 may receive the signature sequence index l of one of the two sets of signature sequences notified by the base station1And index l according to the signature sequence1Obtain a signature sequence index l for another set of signature sequences2。
Signature sequence index l1And a signature sequence index l2The mapping relationship between the base station and the user equipment can be preset or determined by negotiation, or one of the base station and the user equipment notifies the other. For example, the mapping may be l2=(l1+ K) mod40, where K is an integer, or l2=40-l1. In general, K can be taken to be any integer between 1 and 39. The base station and the user equipment can realize negotiation or notification of the mapping relation of the signature sequence index by interacting the value of the parameter K. If the base station detects that the user equipment sends the uplink single stream, the base station only needs to send one signature sequence index.
Optionally, as another embodiment, in a case that the base station detects that the user equipment transmits an uplink single stream, the length of the feedback pattern received by the receiving unit 41 is 3 information bits, as described in the first embodiment. The determination unit 42 may determine HARQ feedback information corresponding to the feedback pattern. The HARQ feedback information of the uplink data using the dual stream is (ACK ), (ACK, NACK), (NACK, ACK) or (NACK ), and the HARQ feedback information of the uplink data using the single stream is ACK or NACK, as shown in table 1 above, where ACK indicates that the HARQ feedback information is acknowledgment, NACK indicates that the HARQ feedback information is negative acknowledgment, and symbol "," previous ACK or NACK indicates HARQ feedback information of the uplink data of the main stream in the dual stream, and symbol "," subsequent ACK or NACK indicates HARQ feedback information of the uplink data of the secondary stream in the dual stream. This enables compatibility with existing single stream HARQ feedback information.
Alternatively, as another embodiment, as shown in table 2 above, the determining unit 41 may determine that the HARQ feedback information corresponding to the feedback pattern { +1, +1, +1} is ACK, the HARQ feedback information corresponding to the feedback pattern { -1, -1, -1} is NACK, the HARQ feedback information corresponding to the feedback pattern { +1, +1, +1, -1; "1, +1, +1; +1, +1} is (ACK ), the HARQ feedback information corresponding to the feedback pattern { +1, +1, +1 { +1, +1; +1, +1, +1} is (NACK, ACK), the HARQ feedback information corresponding to the feedback pattern { -1, -1, -1; -1, -1, -1} is (NACK, NACK). Thus, the minimum code distance value between the feedback patterns is as large as possible, and the encoding reliability of the feedback patterns can be improved.
Table 1 is compatible with existing HARQ indication sequences. The feedback pattern of table 2 has good code distance performance and high reliability. Moreover, the feedback pattern in table 2 can not only be compatible with the existing single-stream HARQ indication sequence, but also ensure that false alarm detection of the base station does not result in misjudgment of the UE, thereby improving the accuracy of HARQ feedback.
Optionally, as another embodiment, in a case that the base station detects that the user equipment transmits an uplink single stream, the length of the feedback pattern received by the receiving unit 41 is 6 information bits, and the same feedback pattern is used to indicate different HARQ feedback information in a case that the uplink data adopts a single stream and a dual stream, respectively, as described in the second embodiment above.
Alternatively, as another embodiment, as shown in table 3 above, the determination unit 41 may determine a feedback pattern corresponding to (ACK ), (ACK, NACK), (NACK, ACK), or (NACK ), where ACK denotes acknowledgement and NACK denotes negative acknowledgement. And the determining unit 41 determines HARQ feedback information according to the uplink single/dual stream information and the feedback pattern of the user equipment.
Specifically, the determining unit 41 may determine that the feedback pattern corresponding to (ACK, NACK) indicates that the HARQ feedback information of the uplink data is an acknowledgement if the base station detects that the user equipment transmits the uplink single stream, indicates that the HARQ feedback information of the uplink data of the primary stream is an acknowledgement and indicates that the HARQ feedback information of the uplink data of the secondary stream is a negative acknowledgement if the base station detects that the user equipment transmits the uplink double stream; determining that a feedback pattern corresponding to (NACK ) indicates that HARQ feedback information of uplink data is negative acknowledgement when the base station detects that uplink single stream is transmitted for user equipment, indicates that HARQ feedback information of the uplink data of a main stream is negative acknowledgement and HARQ feedback information of the uplink data of an auxiliary stream is negative acknowledgement when the uplink data adopts double streams; determining that the feedback pattern corresponding to (ACK ) indicates that HARQ feedback information of uplink data of the primary stream is acknowledgment and HARQ feedback information of uplink data of the secondary stream is acknowledgment; determining that the feedback pattern corresponding to (NACK, ACK) indicates that HARQ feedback information of uplink data of the primary stream is negative acknowledgement and HARQ feedback information of uplink data of the secondary stream is acknowledgement.
The minimum code distance value between the feedback patterns can be as large as possible to improve the coding reliability of the feedback patterns. For example, tables 4 and 5 are two examples of mapping tables of feedback patterns and HARQ feedback, where the minimum code distance value between the feedback patterns is 4.
The embodiments in tables 3 to 5 can compress the number of feedback patterns, and jointly encode 6 information bits corresponding to two signature sequences, thereby improving the minimum code distance between the feedback patterns and enhancing the feedback reliability.
A communication system according to an embodiment of the present invention may include the above-described base station 30 or user equipment 40.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (27)
1. A feedback method for HARQ feedback information in uplink multiple input multiple output technology is characterized in that the method comprises the following steps:
generating a feedback pattern for indicating HARQ feedback information of uplink data, wherein the feedback pattern is a coding sequence consisting of +1 and/or-1, and the length of the feedback pattern is 6 information bits under the condition that a base station detects that uplink double streams are sent by user equipment;
transmitting the feedback pattern to the user equipment.
2. The method of claim 1, wherein the generating the feedback pattern for indicating HARQ feedback information for uplink data comprises:
and generating the feedback patterns, so that the minimum code distance value between different feedback patterns is the maximum under the condition that the base station detects that the user equipment sends the uplink double streams.
3. The method of claim 1 or 2, wherein the first 3 information bits and the last 3 information bits in the feedback pattern of 6 information bits correspond to two sets of signature sequences, respectively.
4. The method of claim 3, further comprising: informing the user equipment of the signature sequence index/of the two sets of signature sequences1And l2(ii) a Or,
informing the user equipment of a signature sequence index/of one of the two sets of signature sequences1So that the UE indexes l according to the signature sequence1Obtain a signature sequence index l for another set of signature sequences2。
5. The method of claim 4, wherein the signature sequence index/, is1And a signature sequence index l2Satisfy l2=(l1+ K) mod40, where K is an integer, or l2=40-l1。
6. The method according to any of claims 1 to 5, wherein in case the base station detects that an uplink single stream is transmitted for a user equipment, the length of the feedback pattern is 3 information bits,
the generating of the feedback pattern for indicating HARQ feedback information of uplink data includes:
generating a feedback pattern corresponding to HARQ feedback information, wherein the HARQ feedback information adopted when the base station detects that the user equipment sends the uplink double flow is (ACK ), (ACK, NACK), (NACK, ACK) or (NACK ); the base station detects that the HARQ feedback information adopted when the user equipment sends the uplink single stream is ACK or NACK, wherein ACK represents acknowledgement, NACK represents negative acknowledgement, symbol, the former ACK or NACK represents HARQ feedback information of the uplink data of the main stream in the double stream, and the latter ACK or NACK represents HARQ feedback information of the uplink data of the auxiliary stream in the double stream.
7. The method of claim 6, wherein the first 3 information bits of the feedback pattern corresponding to the HARQ feedback information (ACK, NACK) and the 3 information bits of the feedback pattern corresponding to the HARQ feedback information ACK are the same, or wherein the first 3 information bits of the feedback pattern corresponding to the HARQ feedback information (NACK ) and the 3 information bits of the feedback pattern corresponding to the HARQ feedback information NACK are the same.
8. The method of claim 7,
the feedback pattern corresponding to the HARQ feedback information ACK is { +1, +1, +1 };
the feedback pattern corresponding to the HARQ feedback information NACK is { -1, -1, -1 };
the feedback pattern corresponding to HARQ feedback information (ACK ) is { +1, +1, -1 { +1, +1 };
the feedback pattern corresponding to HARQ feedback information (ACK, NACK) is { +1, +1, +1 { +1, -1, -1 };
the feedback pattern corresponding to HARQ feedback information (NACK, ACK) is { -1, -1, +1 { +1, +1, +1 };
the feedback pattern corresponding to the HARQ feedback information (NACK ) is-1, -1, -1, -1.
9. The method according to any of claims 1 to 5, wherein the length of the feedback pattern is 6 information bits in case the base station detects that an uplink single stream is transmitted for a user equipment, and the same feedback pattern is used to indicate different HARQ feedback information in case the user equipment transmits an uplink single stream and an uplink dual stream, respectively.
10. The method of claim 9, wherein the generating the feedback pattern for indicating HARQ feedback information for uplink data comprises:
generating a feedback pattern, wherein the feedback pattern indicating HARQ feedback information (ACK, NACK) at the time of the uplink dual stream indicates HARQ feedback information ACK at the time of the uplink single stream, the feedback pattern indicating HARQ feedback information (NACK ) at the time of the uplink dual stream indicates HARQ feedback information NACK at the time of the uplink single stream, the feedback pattern indicating HARQ feedback information (ACK ) and (NACK, ACK) at the time of the uplink dual stream is not used at the time of the uplink single stream, wherein ACK represents acknowledgement, NACK represents negative acknowledgement, symbol "," previous ACK or NACK represents HARQ feedback information of uplink data of a main stream in the dual stream, and symbol "," subsequent ACK or NACK represents HARQ feedback information of uplink data of a secondary stream in the dual stream.
11. A feedback method for HARQ feedback information in uplink multiple input multiple output technology is characterized in that the method comprises the following steps:
receiving a feedback pattern sent by a base station, wherein the feedback pattern is a coded sequence consisting of +1 and/or-1, and the length of the feedback pattern is 6 information bits under the condition that the base station detects that user equipment sends uplink double streams;
determining HARQ feedback information indicated by the feedback pattern.
12. The method of claim 11, wherein a minimum code distance value between different feedback patterns is largest in case that a base station detects that an uplink dual stream is transmitted for a user equipment.
13. The method of claim 11 or 12, wherein the first 3 information bits and the last 3 information bits in the feedback pattern of 6 information bits correspond to two sets of signature sequences, respectively.
14. The method of claim 13, further comprising:
receiving the signature sequence index l of the two groups of signature sequences notified by the base station1And l2(ii) a Or,
receiving a signature sequence index l of one of the two sets of signature sequences notified by the base station1And indexing l according to said signature sequence1Obtain a signature sequence index l for another set of signature sequences2。
15. The method of claim 14, wherein the indexing/, according to the signature sequence1Obtain a signature sequence index l for another set of signature sequences2The method comprises the following steps:
according to l2=(l1+ K) mod40 gets the signature sequence index l2Wherein K is an integer, or2=40-l1。
16. The method according to any of claims 11-15, wherein in case the base station detects that an uplink single stream is transmitted for a user equipment, the length of the feedback pattern is 3 information bits,
the determining the HARQ feedback information indicated by the feedback pattern includes:
determining HARQ feedback information corresponding to the feedback pattern, wherein the HARQ feedback information detected by the base station when the user equipment sends the uplink double stream is (ACK ), (ACK, NACK), (NACK, ACK) or (NACK ), the HARQ feedback information detected by the base station when the user equipment sends the uplink single stream is ACK or NACK, wherein ACK represents acknowledgement, NACK represents negative acknowledgement, symbol "," previous ACK or NACK represents HARQ feedback information of uplink data of a main stream in the double stream, and symbol "," next ACK or NACK represents HARQ feedback information of uplink data of an auxiliary stream in the double stream.
17. The method of claim 16, wherein the determining HARQ feedback information corresponding to a feedback pattern comprises:
it is determined that HARQ feedback information corresponding to the feedback pattern { +1, +1, +1} is ACK, HARQ feedback information corresponding to the feedback pattern { -1, -1, -1} is NACK, HARQ feedback information corresponding to the feedback pattern { +1, +1, -1; -1, +1, +1} is (ACK ), HARQ feedback information corresponding to the feedback pattern { +1, +1, +1; +1, -1, -1} is (ACK, NACK), HARQ feedback information corresponding to the feedback pattern { -1, -1, +1; +1, +1, +1} is (NACK, ACK), and HARQ feedback information corresponding to the feedback pattern { -1, -1, -1; -1, -1, -1, -1 }' is (NACK ).
18. The method according to any of claims 11-15, wherein the length of the feedback pattern is 6 information bits in case the base station detects that an uplink single stream is transmitted for a user equipment, and the same feedback pattern is used to indicate different HARQ feedback information in case the user equipment transmits an uplink single stream and an uplink dual stream, respectively.
19. A base station, comprising:
a generating unit, configured to generate a feedback pattern used for indicating HARQ feedback information of uplink data, where the feedback pattern is a coded sequence consisting of +1 and/or-1, and the length of the feedback pattern is 6 information bits when the base station detects that a ue sends an uplink dual stream;
and the sending unit is used for sending the feedback pattern generated by the generating unit to user equipment.
20. The base station of claim 19, wherein the generating unit is specifically configured to generate the feedback patterns such that a minimum code distance value between different feedback patterns is the largest when the base station detects that the user equipment sends an uplink dual stream.
21. The base station of claim 19 or 20, wherein the first 3 information bits and the last 3 information bits in the feedback pattern of 6 information bits generated by the generating unit correspond to two sets of signature sequences, respectively.
22. The base station of any of claims 19 to 21, wherein the generating unit generates the feedback pattern having a length of 3 information bits if the base station detects that an uplink single stream is transmitted for a user equipment,
the generating unit is specifically configured to generate a feedback pattern corresponding to HARQ feedback information, where HARQ feedback information detected by the base station as when the user equipment sends an uplink dual stream is (ACK ), (ACK, NACK), (NACK, ACK) or (NACK ), and HARQ feedback information detected by the base station as when the user equipment sends an uplink single stream is ACK or NACK, where ACK denotes acknowledgement, NACK denotes negative acknowledgement, a symbol "," previous ACK or NACK denotes HARQ feedback information of uplink data of a main stream in the dual stream, and a symbol "," subsequent ACK or NACK denotes HARQ feedback information of uplink data of an auxiliary stream in the dual stream.
23. The base station of claim 22, wherein the first 3 information bits of the feedback pattern corresponding to HARQ feedback information (ACK, NACK) generated by the generating unit are the same as the 3 information bits of the feedback pattern corresponding to HARQ feedback information ACK, or wherein the first 3 information bits of the feedback pattern corresponding to HARQ feedback information (NACK ) generated by the generating unit are the same as the 3 information bits of the feedback pattern corresponding to HARQ feedback information NACK.
24. A user device, comprising:
a receiving unit, configured to receive a feedback pattern sent by a base station, where the feedback pattern is a coded sequence consisting of +1 and/or-1, and the length of the feedback pattern is 6 information bits when the base station detects that a user equipment sends an uplink dual stream;
a determining unit, configured to determine HARQ feedback information indicated by the feedback pattern received by the receiving unit.
25. The UE of claim 24, wherein a minimum code distance value between different feedback patterns received by the receiving unit is largest in case that a base station detects that an uplink dual stream is transmitted for the UE.
26. The UE of claim 25, wherein the first 3 information bits and the last 3 information bits in the feedback pattern of 6 information bits received by the receiving unit correspond to two sets of signature sequences, respectively.
27. The UE of any one of claims 24 to 26, wherein in case that the base station detects that an uplink single stream is transmitted for the UE, the length of the feedback pattern received by the receiving unit is 3 information bits,
the determining unit is specifically configured to determine HARQ feedback information corresponding to a feedback pattern, where HARQ feedback information of uplink data in a dual stream is (ACK ), (ACK, NACK), (NACK, ACK), or (NACK ), and HARQ feedback information of uplink data in a single stream is ACK or NACK, where ACK represents acknowledgement, NACK represents negative acknowledgement, and a symbol, where "previous ACK or NACK represents HARQ feedback information of uplink data in a main stream in the dual stream, and" subsequent ACK or NACK represents HARQ feedback information of uplink data in an auxiliary stream in the dual stream.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017041288A1 (en) * | 2015-09-11 | 2017-03-16 | 华为技术有限公司 | Data retransmission method and apparatus |
CN109804586A (en) * | 2016-10-07 | 2019-05-24 | 高通股份有限公司 | Uplink voice and video source modeling |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1808962A (en) * | 2005-01-11 | 2006-07-26 | 三星电子株式会社 | Apparatus and method for transmitting fast feedback information in a wireless communication system |
CN1930816A (en) * | 2004-03-12 | 2007-03-14 | 三星电子株式会社 | Method for operation of HARQ in a broadband wireless access communication system |
CN101969663A (en) * | 2009-07-28 | 2011-02-09 | 大唐移动通信设备有限公司 | Method, device and system for transmitting control information |
CN102300313A (en) * | 2010-06-28 | 2011-12-28 | 华为技术有限公司 | Resource allocation method of dedicated demodulation reference signal and relevant device |
-
2012
- 2012-05-08 CN CN201210140058.7A patent/CN102710391B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1930816A (en) * | 2004-03-12 | 2007-03-14 | 三星电子株式会社 | Method for operation of HARQ in a broadband wireless access communication system |
CN1808962A (en) * | 2005-01-11 | 2006-07-26 | 三星电子株式会社 | Apparatus and method for transmitting fast feedback information in a wireless communication system |
CN101969663A (en) * | 2009-07-28 | 2011-02-09 | 大唐移动通信设备有限公司 | Method, device and system for transmitting control information |
CN102300313A (en) * | 2010-06-28 | 2011-12-28 | 华为技术有限公司 | Resource allocation method of dedicated demodulation reference signal and relevant device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017041288A1 (en) * | 2015-09-11 | 2017-03-16 | 华为技术有限公司 | Data retransmission method and apparatus |
CN107078859A (en) * | 2015-09-11 | 2017-08-18 | 华为技术有限公司 | The method and device that a kind of data are retransmitted |
CN107078859B (en) * | 2015-09-11 | 2020-06-02 | 北京花旺在线商贸有限公司 | Data retransmission method and device |
CN109804586A (en) * | 2016-10-07 | 2019-05-24 | 高通股份有限公司 | Uplink voice and video source modeling |
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